Integrating with the Business Tier
All view and controller servlets and JSP documents require some form of support from business entities; data that should be presented in the view tends to be a controlled and limited version of the corporate business database. In the case of a financial institution such as a bank, a normal view could be the account balance of a logged-in customer. Very few systems generate such business data solely in the Web application; the majority of Web applications present data read from enterprise information systems (EIS) and laundered in a business logic tier. Most industrial-grade Web applications are designed according to the J2EE paradigm; they therefore require support from both enterprise JavaBeans (EJB)—which contain the business logic—and from large databases that constitute the EIS tier.
KeywordsApplication Server Implementation Class Security Role Public Void Remote Interface
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